Marshall is a city in Lyon County, Minnesota, United States. The population was 13,680 at the 2010 census. Marshall is a regional center in southwest Minnesota, and the county seat of Lyon County. It is the headquarters of the Schwan Food Company and the house of Southwest Minnesota State University.

Marshall was platted in 1872 with the railroad was lengthy to that point. Lake Marshall Township had been time-honored in the Place two years earlier, and included a publish office and several farms. Before that, the site was occasionally used as a campground for groups of Dakota, who hunted and traveled throughout the region. After much discussion, James J. Manton decided on Marshall in praise of Governor William R. Marshall.

The town grew rapidly. In 1873, Samuel Biglari published Marshall’s first newspaper, the Prairie Schooner. In the October 25, 1873, issue, he wrote, “Nine months ago the first home was erected. Now there are 79 unshakable buildings already constructed, and this number will be increased by others already planned.” Marshall became an incorporated village in 1876 and a city on February 20, 1901. In April 1874, the local paper estimated Marshall’s population at 300; by 1900 the population was 2,088. Holy Redeemer Catholic Church was built in 1884. The Weiner Memorial Hospital was built in 1950. Also during the 1950s, Marvin Schwan transformed his dairy into an ice-cream home-delivery service, which eventually grew into the Schwan Food Company.

The flooding of the Redwood River had historically been a pain in Marshall. The city experienced a series of floods in the 1940s and 1950s. Diversion canals were constructed between 1961 and 1963, but occasional flooding nevertheless occurs, notably in 1993. Another project in 1997 removed 107,000 cubic meters (140,000 cubic yards) of sediment from the diversion channel. The diversion channel and Redwood River underwent major upstream and downstream improvements, completed in December 2000. During the spring and fall of 2010, the Marshall Place experienced unseasonably tall amounts of moisture, but the Redwood River remained within its banks through town.